class_docstr: A trigger specifies a timespot or several timespots during training,
  and a corresponding action will be taken when the timespot(s) is reached.
  EveryEpoch is a trigger that triggers an action when each epoch finishs.
  Could be used as trigger in setvalidation and setcheckpoint in Optimizer,
  and also in TrainSummary.set_summary_trigger.
  
  >>> everyEpoch = EveryEpoch()
  creating: createZooEveryEpoch
docstr: Create a EveryEpoch trigger.
docstr_tok: ["Create","a","EveryEpoch","trigger","."]
code: def __init__(self):
      """
      Create a EveryEpoch trigger.
      """
      ZooTrigger.__init__(self, None, "float")
  
imports: from abc import abstractmethod
  from bigdl.util.common import JavaValue
label_desc: Use image node_id 1 to create a new EveryEpoch object from inherited base classes: ZooTrigger with example: obj = EveryEpoch()